Nikon D4 User Manual - Page 132

AF-S focus mode: Focus locks automatically when the in-focus indicator appears, and remain locked until you remove your finger from the shutter-release button. Focus can also be locked by pressing the center of the sub-selector (see above). 3 Recompose the photograph and shoot. Focus will remain locked between shots if you keep the shutter-release button pressed halfway (AF-S) or keep the center of the sub-selector pressed, allowing several photographs in succession to be taken at the same focus setting. Do not change the distance between the camera and the subject while focus lock is in effect. If the subject moves, focus again at the new distance. N A See Also See Custom setting c1 (Shutter-release button AE-L, 0 316) for information on using the shutter-release button to lock exposure, Custom Setting f6 (Assign sub-selector center, 0 333) for information on choosing the role played by the center of the sub-selector. 106